353 citations · 973 across the 15 of their papers we have counts for
15 papers
Automated Spin Readout Signal Analysis Using U-Net with Variable-Length Traces and Experimental Noise
Yui Muto, Motoya Shinozaki, Hideaki Yuta +5
Single-shot spin-state discrimination is essential for semiconductor spin qubits, but conventional threshold-based analysis of spin readout traces becomes unreliable under noisy co…
High fidelity flopping-mode single spin operation with tuning inter-dot orbital levels
Yuta Matsumoto, Xiao-Fei Liu, Arne Ludwig +5
Fast spin manipulation and long spin coherence time in quantum dots are essential features for high fidelity semiconductor spin qubits. However, generally it has not been well esta…
Accelerated adiabatic passage of a single electron spin qubit in quantum dots
Xiao-Fei Liu, Yuta Matsumoto, Takafumi Fujita +3
Adiabatic processes can keep the quantum system in its instantaneous eigenstate, which is robust to noises and dissipation. However, it is limited by sufficiently slow evolution. H…
Electron g-factor determined for quantum dot circuit fabricated from (110)-oriented GaAs quantum well
T. Nakagawa, S. Lamoureux, T. Fujita +8
The choice of substrate orientation for semiconductor quantum dot circuits offers opportunities for tailoring spintronic properties such as g-factors for specific functionality. In…
Noise-robust classification of single-shot electron spin readouts using a deep neural network
Yuta Matsumoto, Takafumi Fujita, Arne Ludwig +3
Single-shot readout of charge and spin states by charge sensors such as quantum point contacts and quantum dots are essential technologies for the operation of semiconductor spin q…
Loading a quantum-dot based "Qubyte" register
C. Volk, A. M. J. Zwerver, U. Mukhopadhyay +8
Electrostatically defined quantum dot arrays offer a compelling platform for quantum computation and simulation. However, tuning up such arrays with existing techniques becomes imp…
Quantum state transfer of angular momentum via single electron photo-excitation from a Zeeman-resolved light hole
Kazuyuki Kuroyama, Marcus Larsson, Jo Muramoto +9
Electron spins in GaAs quantum dots have been used to make qubits with high-fidelity gating and long coherence time, necessary ingredients in solid-state quantum computing. The qua…
Automated tuning of inter-dot tunnel couplings in quantum dot arrays
C. J. van Diepen, P. T. Eendebak, B. T. Buijtendorp +5
Semiconductor quantum dot arrays defined electrostatically in a 2D electron gas provide a scalable platform for quantum information processing and quantum simulations. For the oper…
Non-linear and dot-dependent Zeeman splitting in GaAs/AlGaAs quantum dot arrays
V. P. Michal, T. Fujita, T. A. Baart +5
We study the Zeeman splitting in lateral quantum dots that are defined in GaAs-AlGaAs het- erostructures by means of split gates. We demonstrate a non-linear dependence of the spli…
A single eletron-photon pair generation from a single polarization-entangled photon pair
Kazuyuki Kuroyama, Marcus Larsson, Sadashige Matsuo +6
We demonstrate paired generation of a single photo-electron in a quantum dot and a single photon from a single polarization-entangled photon pair that is generated by spontaneous p…
Quantum simulation of a Fermi-Hubbard model using a semiconductor quantum dot array
T. Hensgens, T. Fujita, L. Janssen +6
Interacting fermions on a lattice can develop strong quantum correlations, which lie at the heart of the classical intractability of many exotic phases of matter. Seminal efforts a…
Coherent shuttle of electron-spin states
T. Fujita, T. A. Baart, C. Reichl +2
We demonstrate a coherent spin shuttle through a GaAs/AlGaAs quadruple-quantum-dot array. Starting with two electrons in a spin-singlet state in the first dot, we shuttle one elect…
Coherent spin-exchange via a quantum mediator
T. A. Baart, T. Fujita, C. Reichl +2
Coherent interactions at a distance provide a powerful tool for quantum simulation and computation. The most common approach to realize an effective long-distance coupling 'on-chip…
Single-Spin CCD
Timothy Alexander Baart, Mohammad Shafiei, Takafumi Fujita +3
Spin-based electronics or spintronics relies on the ability to store, transport and manipulate electron spin polarization with great precision. In its ultimate limit, information i…
Single photoelectron spin detection and angular momentum transfer in a gate defined quantum dot
Takafumi Fujita, Kazuhiro Morimoto, Haruki Kiyama +7
Recent innovations in fabricating nanoscale confined spin systems have enabled investigation of fundamental quantum correlations between single quanta of photons and matter states.…